my system right now. 500W power supply 320 gb western digital HDD 4GB Corsair DDR2 RAM Core 2 Duo Conroe 2.13 Ghz 2x Nvidia 7600 GS 512 mb im looking to upgrade my processor and my vid card. processor to a 3.0 or better ghz core 2 duo and video card to a 8600GTS i think. i will be upgrading the processor first so, will i need to get a new power supply do you think. im going to before the vid card anyway...but im curious if i can get away with buying the processor first and not worrying about anything failing to work. any thoughts?